For well over a year now, small change has been hard to come by there. Stores hang “No Coins” signs in their windows, and offer candies instead of change. Taxi-drivers round up—or down—to avoid giving up precious coins, while smaller merchants sometimes turn away business if you have only bills to offer them. The government has fined banks thousands of pesos for refusing to hand over coins, and, in October, the city’s subways became temporarily free when the booths ran short of change. For the average Bonaerense, everyday transactions now entail a complicated calculation of where coins can be acquired and when they will be needed.